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Fair Value Measurements - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Oct. 04, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Interest expense $ 182 $ 204  
Changes in fair value of promissory note $ 0 (1,024)  
Yaskawa Note      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Interest expense   38  
Changes in fair value of promissory note   $ 1,000  
Yaskawa Note | Yaskawa      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Principal and unpaid interest of convertible note     $ 15,600
Principal amount of long term loan facility     15,000
Accrued interest on promissory note     $ 600
Number of common stock shares converted per preferred share (in shares)     3,120,000